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Tuesday, October 17, 2017

Geosynchronous Satellite Launch Vehicle Mark-III



      The GSLV Mark-III otherwise called LVM-3, which is a type of launch vehicle manufactured and developed by Indian Space Research Organisation. (Geosynchronous Satellite Launch Vehicle). It is a type of heavy capability launcher being developed by Indian Space Research Organisation (ISRO).
Now it allow India to achieve self reliance in launching satellites. It can carry a satellite into geostationary orbit having mass of 4 tonne. LVM3 is a Indian built cryogenic stage vehicle will be used for future Indian crew vehicle for manned missions. GSLV Mark-III features an Indian cryogenic third stage and higher payload capacity than normal GSLV launchers.


     GSLV is an indigenous launching vehicle originated in India. Its development began in early's 2000s, its first launch was performed in 2009-2010. Several factors affected the launch such as failure of upper stage on 15th April 2010.The first flight with a crew on board would take place after 2020.


     The GSLV rocket has mainly two advanced boosters, they are
  1. S200 Booster
  2. L110 Booster
S200 Booster Static Test:

    The S200 Booster was successfully tested on 24th January 2010 as it burned for 130 seconds which generated a thrust of about 500 tonnes. During this test, nearly 600 ballistic and safety parameters were monitored. And Second successful test was conducted on 4th September 2011 by Indian Space Research Organisation.
L110 Booster Static Test:

     ISRO conducted its first static test of L110 Booster at Liquid Propulsion Systems Centre test facility located at Mahendragiri, Tamil Nadu on 5th March 2010. It burned for nearly 150 seconds and terminated after a leakage in the control system. On 8th September 2010 ISRO successfully conducted a full 200 second test.
Rocket Stages:


     The GSLV-MARK-III uses S200 solid motors. Each booster has a diameter of 3.2 metres, a length of 25 metres and carries 207 tonnes of propellant. The boosters burn for 130 seconds and produce a peak thrust of about 5,150 kilonewtons.


     The core stage designated as L110, which has a diameter of 4 meter, liquid fuel carrying 110 tonnes of UDMH and N2O4. It is the first Indian liquid-engine cluster design, and uses two improved Vikas Rocket Engine, each producing 700 kilonewtons. The improved Vikas engine uses the technique of regenerative cooling, provided improved weight and specific pulse, compared to earlier rockets. The L110 Booster burns for 113 seconds after lift-off and 200 seconds completely.

Stage-3 - Cryogenic Upper Stage:

     The cryogenic upper stage is designated as C25 and it is powered by Indian-Developed CE-20 engine burning LOX and LH2, producing 186 kilonewtons of thrust. The C25 will be 4 meter in diameter and 13.5 meter long and contain 27 tonnes of propellant.

Payload Fairing:

     The payload fairing has a diameter of 5 meters and a payload volume of 110 cubic meters.

Future Improvement:

     There is project proposal to include Indigenous Semi-Cryogenic Engine to LVM-3 in order to boost its payload capacity of 6 tonnes to Geostationary Transfer Orbit.


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